He currently plays for Real Aviles, wearing the number 9 shirt. He plays primarily as a Forward. His current market value is estimated at 250K €.

His most recent move was a from Rayo Cantabria to Real Aviles on 2024-07-17.

In the Primera Federación 2025-2026 season, Álvaro Santamaría scored 4 goals and provided 0 assists across 23 appearances, averaging 0.2 goals per game with 0 shots attempted and 0 on target.